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PART 1 <br /> Page 11 of 67 <br /> Permit No.:COG500000 <br /> a. Dimension Stone facilities(SIC code 1411) <br /> Table C.1.1—Applicable Limitations <br /> Limitations Monitoring Frequency <br /> [CIS Code Parameter 30 day 7 day Daily 2 year Sample Type <br /> average average Max. I averag] Minor Facilities Major Facilities <br /> General Permit Requirements <br /> Monthly 2x/month <br /> Limit in Recorder or <br /> 50050 Flow, MGDl ---- Report ---- (Continuous or (Continuous or <br /> cert. Instantaneous') Instantaneous') In-situ <br /> 00400 pH,s.u. ---- ---- 6.5-9.0 ---- 2x/month Weekly Grab <br /> 84066 Oil and Grease,mg/I ---- ---- ---- ---- 2x/month Weekly Visual3 <br /> 03582 Oil and Grease,mg/I ---- ---- 10 ---- Contingent Weekly Grab <br /> 00530 Total Suspended <br /> Solids,mg/I 30 45 ---- ---- 2x/month Weekly Grab <br /> Site Specific Requirements <br /> 515001 Flow,Total, MG' Report ---- ---- ---- Continuous or Continuous or Calculated <br /> Quarterly Instantaneous' Instantaneous' <br /> Total <br /> 51500 EG Flow,Total, MG4 Report ---- ---- ---- Continuous or Continuous or Calculated <br /> Monthly Instantaneous' Instantaneous' <br /> Total <br /> 70295 Total Dissolved Solids, Report ---- ---- ---- Quarterly Quarterly Grab <br /> mg/Is <br /> 00665 Total Phosphorus(as Various Various Various ---- Various Various Composite <br /> P), mg/16 P <br /> 00665 Total Phosphorus(as P), Ib/month6 Various ---- ---- ---- Various Various Calculated <br /> 00665 Total Phosphorous, <br /> cumulative Various ---- ---- ---- Various Various Calculated <br /> Ibs/previous 12 <br /> consecutive months <br /> 01323 Selenium, Potentially Various ---- Various Various 2x/month Weekly Grab <br /> Dissolved, µg/I <br /> 01323 Selenium, Potentially <br /> Dissolved,Ibs/day' Various ---- Various ---- 2x/month Weekly Calculated <br /> 00094 Electrical Conductivity Various ---- ---- ---- Quarterly Quarterly Grab <br /> (EC),dS/m <br /> Various Other Pollutants of Grab or <br /> Various ---- Various Various Various Various <br /> Concern Composite <br /> Various Whole Effluent Toxicity(WET) <br /> 3 <br /> Chronic Stat Diff and IC2521WC ---- Composites/ <br /> Quarterly Quarterly Test <br /> Acute LC50>100% ---- Grab <br /> Note 1: Flow Limit—The chronic flow limit is equal to the flow rate provided in the permit application,and will be stated in the <br /> certification. <br /> Note 2: Flow Measurement—If power is not available,flow may be measured on an instantaneous basis. <br /> Note 3: Oil and Grease: — A visual observation of the discharge for each permitted outfall must be made 2 times per <br /> month or weekly,as stated in the certification. In the event an oil sheen or floating oil is observed,a grab sample shall be <br /> collected weekly, analyzed, and reported on the DMR. In addition, corrective action shall be taken immediately to <br /> mitigate the discharge of oil. <br />